Rolling-mill



- '(No ModeL) D. B. OLIVER.

ROLLING MILL. No. 292,943. Patented Feb. 5,1884.

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. DAJ'ID 1'3. OLIVER, OF ALLEGHENY, PENNSYLVANIA.

ROLLING-MILL.

SPECIFICATION forming part'of Letters Patent No. 292,943, dated February 5, 1884,

Ap licniibn tiled September 3, 1883. (No model.)

T on whom it 12mg concern: Be it known that I, DAVID B. Ouvnn, of Allegheny city, in the county of Allegheny and State of, Pennsylvania, have invented a new and useful Improvement in Rolling-Mills; and I do hereby declare the following to be a full, clear, and exact description thereoil' Difficulty has been experienced in the use of tongue-and-grooved rolls by reason of the end motion of the rolls caused by the wearing of the bearings. Any wear of the ends of the bearings or brasses of the rolls will permit a corresponding amount of end play which causes the sides of the tongues and grooves to strike and grind 011 each other when the mill is in use, and to wear rapidly, thereby destroying their nicety of fit and permitting the metal The fins, which increase in size the longer the mill is used, are at the following passes rolled back into the bodyof the rod or bar, giving a creased and defective product.

Various expedients have been adopted to remedy this difficulty. One was to provide the bearings with lugs projecting from their ends, and to place adj ustingscrews in the housings, the ends of which bore against the lugs, so that when wear would take place the bearings could be adj usted to take it up. This method was objectionable, because the lugs frequently broke off, and also because a uniform pressure could not be had against the entire surface of the end of the roll. Another method was to insert wedges vertically back of the lugs of the bearings in suitable recesses in the housings, so that as wear took place they would descend by the jar of themachinery and hold the brasses forward. This method was objectionable, because the adj ustment thus obtained was not certain and there was a lack of uniformity of pressure upon the bearings.

To enable others skilled in the art to make and use my invention, I will now describe it by reference to the accompanying drawings, in which Figure l is a perspective view of a portion of the housings, illustrating my improved method of adjusting the bearings to't-ake up the wear of the rolls. Fig. 2 is a view of one of the bearings inverted. Fig. 3 is a view of the adj Listing-screw wedge, and Fig. 4. is a front elevation of the mill.

Like letters of reference indicate like parts in each.

The housings a and rolls b c, with their tongues b and grooves c, are of the usual construction and need not be further described.

Extending through the base of the standards a of each housing, at right angles to the axis of the rolls, and on a level with the seat (Z of the j ournal-bearing or brass e of the lower roll, is ahole, f, for the reception ofthe stem of'an adj ustable wedge, h. The hole f is made of sufficient size through one of the standards a to permit of the passage of the wedge h, as at f. The wedge h has threaded ends h, which extend beyond the sides of the standards a, where they are designed to be fitted with nuts i and washers i, whereby the horizontal adjustment of the wedge is effected. The rear side of the wedge is straight, as at If, and rests. against a vertical shoulder, at, at the rear end of the bearing-seat d.

At the inner corners of the seat dare recesses d for the reception of the lugs e on the bearing 6. The bearing 6 is provided with a lug or projection on its lower surface, which may have one of its lateral faces inclined or wedge-shaped, as at c, and with a concave upper face, 6, for the reception of the j ournalzoi' the rolls.

In Fig. 1 the wedge h is shown in position. Then the bearing 6 is in place, the wedge-v shaped projection 0 rests upon the lower level i of the seat (I, with its inclined lateral face in front of and in contact with the inclined face of the wedge, so that if the nut 13 at the front side is slackened and the nut at the rear side is tightened up, the wedge It will be drawn backward and will act upon the incline e of the bearing and force it inward against the end of the roll. In this manner any slack which exists between the ends of the roll and the bearings may be taken up and all end play of the roll effectually prevented. The wedge h, bearing as it does on the entire width of the brass 6, causes the whole surface of the latter to bear uniformly against the end of the roll, and when the wedge is once adjusted it remains firmly in its adjusted position so long as the nuts are not touched.

My improvement is simple and efficient in construction and operation. It prevents the wearing of the collars and grooves and effects a large saving, not only in the maintenance of the mill, but also in the character of product of the same. The shoulder d is of importance as a means of supporting the wedge h so that it shall hold the bearing up against the end of the roll. If, however, the wedge-bar is made of sufficient size and strength to hold the bear ing properly in place, the shoulder may be omitted.

If desired, the inclined surface a on the side of the projection may be omitted, and the wedge h may act directly on a plain projection or lug occupying the same position; but I prefer the construction shown, as it gives a longer bearing-surface between the wedge and brass.

I am aware that wedges have been employed below the lower bearings of rolls in order to raise and lower the lower roll, and do not herein claim such a combination and arrangement of wedges and bearings.

What I claim as my invention, and desire to secure by Letters Patent, is

1. The combination, in-a rolling-mill, of a roll and its bearings with an adjustable wedge placed horizontally back of the bearing at right angles to the axis of the roll, to take up the wear of the bearings and prevent end motion of the rolls, substantially as and for the purposes described.

2. The combination, in a rolling-mill, of a roll having adjustable bearings provided with inclined end surfaces, in combination with adjusting-wedges arranged back of the bearings and at right angles to the axis of the rolls, to operate in conjunction with the inclined end surfaces of the bearings, substantially as and for the purposes described.

3. The combination, in a rolling-mil1,0f the roll and its bearing 0 with the seat (I, lateral wedge 7L, arranged back of the bearing, stems h, -and standards a, substantially as and for the purposes described.

4. The combination, in a rolling-mill, of a roll and its bearing with an adjusting-wedgc arranged back of the bearing, and a bearingseat having a shoulder or vertical side for supporting the wedge, substantially as and for the purposes described.

In testimony whereof I have hereunto set my hand this 27th day of August, A. D. 1883.

. DAVID B. OLIVER.

Vitnesses:

V. B. CoRwIX, T. B. KERR. 

